This pleasant, little-visited nature reserve is ideal for escaping the tourist bustle of Senggigi and indulging in a few hours of strolling in the rainforest. The Princess Twin and Swallow Cave waterfalls lie on the marked trail (which can get a little indistinct in parts) and there's the chance of seeing rare butterflies and black monkeys (alongside the common kind). To get here, head north of town to Mangsit, then take Jalan Wisata Alam inland through the Kerandangan Valley.